A customer entered the wrong account number on the memo line of the check mailed to the company. Consequently, another customer's account was credited for that payment. The most effective way to prevent such problems 6) would be to use a. Turnaround documents b. A validity check of customer account numbers c. Closed loop verification d. Check digit verification of customer account numbers 7) Which input control is designed to prevent a buffer overflow attack? a. Size check b. Reasonableness test c. Range check d. Field check 8) A data entry application control that is designed to ensure that the total debits in a journal entry equal the total credits is called a a. Sign check b. Hash total c. Reasonableness check d. Zero-balance check e. Financial total 9) An application control that compares the amount of an employee's raise to that employee's existing salary is called a(n): a. Limit check b. Range test c. Reasonableness test d. Check digit verification e. Size check 10) An organization uses batch processing to generate customer invoices. During the process, the computer sums the invoice number field for all invoices in the batch and the billing clerk then compares that number to the same total that the clerk calculated prior to processing. That calculation (the sum of the sales invoice numbers) is a type of batch total called a: a. Record count b. Financial total c. Hash total